Shuttle check and release



Aug. 18, 1931. A. DAMICO SHUTTLE CHECK AND RELEASE Filed Aug. 9. 1928 2 Sheets-Sheet Fli gwuvnto'o 18011176 211 i an Aug. 18, 1931. L. A. DAMICO SHUTTLE CHECK AND RELEASE Filed Aug. 9. 1928 2 Sheets-Sheet 2 M W 3 4 4 M 6 4 5 M7 7 7 J a, m 2 6 4 a 4 63 M 3 a 8 f a |h|.I Z .h l/J ..l w 5 F ZaufLDHmiEu Patented 18, 1931 UNITED STATES A. DAMICO, OF WILKESTIBARBE, PENNSYLVANIA snowman cnnox AND RELEASE Application filed August 9, 1928. Serial No. 298,502.

The invention forming the subject matter of this. application relates to looms and has for its object a novel mechanism for checking the shuttle in the shuttle box, and for re ieving the shuttle of all pressure at the moment when it is to be thrown by the picker.

Another object of the invention is to provide mechanism of the character referred to, which cooperates with the binder and forms a positive check for the shuttle in such manner as to eliminate the necessity for a check strap.

Other objects of the invention will appear as the detailed description of the invention proceeds.

In the drawings:

Fig. 1 is a fragmentary side elevation of part of the framework of the box loom having my invention applied thereto, and with parts of the boxmechanism shown in section to illustrate the invention more clearly;

Fig. 2 is an exploded perspective view of the mechanism forming my invention;

Fig. 3 is a bottom plan view of the invention as applied to the box guide of the box loom;

Fig. 4 is a fragmentary plan view of one of the boxes of the loom shown in alinement with the shuttle race thereof and with a shuttle in stoppedposition and just before the instant for the picking thereof;

Fig. 5 is an end elevation of the parts of my invention shown in Fig. 4;

F i 6 is a fragmentary section taken on the l1ne 66 of Fig. 4.; and

Fig. 7 is a similar section showing the parts in different operative positions.

In the drawings, the reference numeral 1 designates the framework of the loom, and the numeral 2 designates the rod operated in the usual manner to lift the shuttle boxes 3 and 4. into the desired position in the box guide 5 formed at one end of the lay 6.

The lay 6 is secured to the end of arms 7 (only one of which is shown) pivoted at their lower ends to the frame 1, and is con- .nected to crank arm 8 to be reciprocated in the usual manner. The loom operating mechanism is not shown in detail herein, as

this mechanism forms no part of the present invention, which is limited to theshuttle checking means mounted on the box mechanism. I

The shuttle checking and releasing mechanism comprises a pair of brackets 9 and 10 provided with slots 11 and 12, respectively,

adapted to receive screws 13 and 14 which serve to position said brackets adjustably on the bottom 15- of the box guide.

The outer end of the brackets 9 and 10 are shaped to form bearings 16 and 17, respectively, in which the shaft 18 of the shuttle check is journaled. The shaft 18 extends outwardly from the bracket journal 16 and the extension 19 thereof and has fixed thereto, by means of. the set screw 21, a boss 20 of a rigid arm 22 extending under the bottom 15 of the box guide.

The shaft 18 also projects outwardly through the bracket journal 17 and has the end thereof flattened to receive the end of a flat spring blade 23 which is bolted to the flatv end of shaft 18 by the'usual bolt and nut construction 24. The spring blade 23 extends upwardly along the front of the box guide to the level of the shuttle race and has its upper end bent outwardly to form a branch 25 which is bored to form a bearing for a plunger rod 26 adapted to project into the path of the shuttle and impinge upon a binder to stop the shuttle at the end of its throw in one of the boxes of the loom.

Plunger 26 is provided at one end with spherical head 27, and has its other end screwthreaded to receive a nut 28 which limits the position of the head 27 relative to the blade 23 in one direction, and which may be adjusted to regulate the distance the plunger head 27 may project from the blade 23. In order to hold the plunger head 27 yieldingly projected from the blade 23 a compression spring 29 surrounds the plunger 26 and is interposed between the blade 23 and plunger head 27 for this purpose.

A coil spring 30 surrounds the shaft 18 and has one of its ends 31 secured to the bracket 17 (see Fig. 4) while its other end is similarly secured to a collar 32 secured by a set screw 33 to a shaft 18. The spring 30 may have its tension regulated by rotation of the collar 32 thereon to holdthe plunger-27 normally'retracted in any desired position relative to the shuttle race.

' In order to move plunger 27 into and out of the path of the shuttle in the shuttle race the rigid arm 22 is provided at its free end with a roller 23' which is adapted to be engaged by a branch 34 of the cam memher having an arm 35 secured by a bolt 36 to a plate 37, which, in turn, is suitably bolted to a bearing strap 38 journaled on a rod 39 fixed between two bosses 40 and 41 extending from the rear of the lay.

A bolt 42 not only secures the strap 38 rotatably on the rod 39, but also serves as a pivot for a pitman 43 which is similarly connected at its other end by a bearing strap 44 to the crank throw 45 of a crank 46.

The parts just described are so proportioned and relatively arranged. that, as the lay is reciprocated by the crank mechanism, the plunger is moved by operation of the branch 34 of the cam member on roller 23, into and out of the path of the shuttle and in timed relation to the movements thereof so as to check the throw of the shuttle at the end of its stroke and to release the shuttle immediately before the action of the picker thereon.

Each of the boxes is provided with a long binder spring 47 pivoted at one end thereof to a lug 48 suitably secured'on the outer end of the box and having the free end thereof adapted to swing toward and from the end 49 of the slot 50 formed on said box to receive the spring.

In operation, as the shuttle nears the end of its throw and approaches the spring 47 the plunger 27 seats in a swell portion 51 of the spring 47 and causes a curved part 52 to engage one side of the shuttle and force the shuttle into frictional contact with the side 53, of the box. This frictional engagement of the shuttle beween the spring 47 and the side 53 slows down the movement of the shuttle which, however, continues to move until its bevelled end impinges against the swelled part 51 of spring 47 and is brought by such impingement to a stop in a definite position in the box.

It is to be noted that the shuttle S ends its throw in a predetermined position in a box,

so that the necessity for a check strap is eliminated. This predetermined position can be readily determined by adjustment of the main spring 30 on the shaft 18 or by adjustment of the nut 28 or by both adjustments so that the tension on the spring 47 may be re lated to any desired limit necessary to e ect stopping of the shuttle in the desired predetermined position.

What I claim is:

1. In a box loom, a shuttle box guide frame, a binder pivotally mounted at one end ad'acent the outer end of the shuttle box an free at its other end, with an intermediate ortion disposed so as to make frictional contact with the side of a. shuttle and a swell adjacent the pivoted end adapted to make resilient wedgin contact with the head of said shuttle, a s aft journalled at the bottom of said guide frame disposed axially parallel to the direction of movement of the shuttle, an arm extending from said shaft to a point adjacent said shuttle box, and a spring projected plunger extending from said arm. adapted to make contact with said binder at the region of said swell, and means for oscillating said shaft synchronously with the movement of the lay of the loom.

2. In a box loom as claimed in claim 1, the arm which extends to said shuttle race being itself resilient.

In testimony whereof I afiix my signature.

LEO A. DAMICO. 

